Metallic packing.



PATENTED 001. 18, 1904.

J.J AGOBSON.

METALLIC PACKING.

APPLICATION FILED JULY 2, 1904.

NO MODEL.

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6 1 ATTOR/VE is removed.

v To all whom it may concern:

Be it known that I, J AGOB JAooBsoN, a citizen of the United-States, and a resident of.

Patented October 18, 1904.

PATENT OFFICE.

JACOB JAGOBSON, OF LEAD, souTH DAKOTA.

METALLIC PACKING.

SPECIFICATION forming part of Letters Patent No. 772,714, dated October 18, 1904.

' Application filed M21904. Serial No. 215,157. (No model.)

Lead, in the county of Lawrence and State of South Dakota, have inventeda newand In,1- proved Metallic Packing for Rods, of which the following is afull, clear, and exact description.

This invention relates to metallic packing for piston-rods, valve-rods, or plunger-rods that are workingmembers of steam or other engines, and has for its object to provide novel features "of construction for ametallic packing which adapt it; for very effective service, enable the convenient inspection or renewal of interior details when worn so as to require it, and that permit the application of lubricant through the packing and upon the rod packed herewith, as occasion may require.

The invention consists in the novel construction and combination of parts, as is hereinafter described, and defined in the appended claims. 7

Reference is to be had to the accompanying drawings, forming apart of this specification, in which similar characters of reference indi cate corresponding parts in all the figures.

Figure 1 is a vertical'sectional view ofthe improved packing through its transversecenter substantially on the linel 1 in Fig. 3. Fig. 2 is a mainly perspective front view of the packing box, from which the front plate Fig.- 3 is a vertical sectional view substantially on the line 3 3 insFig. 1, taken at a right angle thereto, showing the packing and 'the rod it engages in cross-section; and Fig. 4: is a sectional plan View of the packing substantially on the line 4 I in,

Fig. 3.

The improved packing is generally applicable for preventing leakage of a motive agent on the valve-chest or cylinder of an engine using gas, water, air, or steam. to actuate its working parts.

InFig. 1, 5 indicates the cylinder of an engine, 6 a head or bonnet secured on one end of the cylinder, and 7 apiston-rod work- 1ng centrally through the head 6, which is suitably apertured, as at a, to permit the free reciprocation of the rod therethrough.

holder-box 8 is provided, wherein other details are contained and held in proper relative positions, and, as shown, the holder-box is preferably rectangular and is interiorly apertured to afford a central rectangular open- 'ing laterally therethrough. Four preferably angular holes a are formed in the holder-box ,8, respectively near corners thereof, and in each rectangular hole the correspondinglyshaped body of a stud-bolt 9 is fitted, said ;bolts having reduced threadedends, and wheninserted the squared portions of the bolts project somewhat beyond the opposite sides of the holder-box. A- rectangular-edged back plate 8, having angular. perforations near its corners that respectively aline with' the angularholes in the holder-box 8, re-

. ceives the angular rear-end portions of the bolts 9 when the back plate, and holder-box have contact. A front plate 8 which is similar to the back plate 8 and has angular perforations near its corners, receives in said perforations the front angular projecting portions of the bolts 9. The plates 8 8 are centrally perforated to loosely receive the rod 7. The front and back plates 8 8 are fitted steam and liquid tight against.the respective sides of the holder-box they have contact with, and the rear side of the back plate 8 is. adapted to form a steam and liquid tight joint with the central portion of the outer side of the cylinder-headfi when the holder-box and back and front plates therefor are together secured upon'the cylinder-head, as will be hereinafter rectangular opening 0 is formed, having its upright defining-walls parallel with corre-' sponding peripheral sides of the holder-box.

A packing-block 10, havinga rectangular peripheral form, is loosely fitted in the opening 0, the thickness of said packing-block being equal with that of the holder-box 8. A central rectangular recess d is formed in the packing-block 10 and extends down therein below the center of said block, this recess leaving two similar side walls 10*; and rabbets d are formed in the opposite sides of the packingblock along the inner upright walls of the recess, thus reducing the thickness of the packing-block 10 between the opposite rabbets.

As shown in Figs. 2 and 3, the upper defining-wall 8 of the opening 0 in the holderblock 8 is rectangularly notched at two points 0, directly opposite the upper ends of the standing side walls 10 of the packing-block 10, these notches permitting a vertical movement of said packing-block. In the lower transverse wall 8 of the holder-block 8 two spaced perforations are formed therethrough, these vertical perforations having internal threads for reception of the adjusting-screws 11, that are clearly shown in Fig. 3. Two socket-perforations e are formed in the lower peripheral wall 10 of the packing-block 1O opposite the upper ends of the adjustingscrews 11 and have a slightly-greater diameter than that of said screws, so that their ends may enter the sockets. The upper ends of the adjusting-screws 11 are reduced to form integral pins g thereon, each pin receiving a circular washer /t, that fits loosely in the lower end of a socket e. In each socket a coiled spring 2' is placed under tension, these springs pressing more or less upon the packing-block 10 in accord with the adjustment of the screws 11. Two abutment-screws 12 are screwed down through threaded perforations formed in the upper transverse wall 8 0i the holderblock 8, these screws at their lower ends having contact with the upper ends of the upright side walls 1O of the packing-block 10, and it will be seen that the contact of the screws 12 with the packing block 10 will define the vertical position of the packingblock in the holder-block. A complementary rectangular packing-block 13 is fitted to slide in the recess (Z of the packing-block 10, there being rectangular channels m formed in the two peripheral side walls of the packing-block 13, which receive the side walls of the upstanding members 10 at and near the rabbets d therein, said channels leaving similar flanges m stand on the packing-block, which are slidably fitted in the rabbets mentioned, as is clearly shown in Fig. 4. Two semicircular concavities n a are respectively formed in the lower transverse wall on the packing-block 13 and upper transverse wall of the packingblock 10, these concavities together forming a circular opening through which the rod 7 may be passed with a sliding fit therein. The rabbets (Z in the opposite sides of the packing-block 10 are joined together at their lower ends by transverse rabbets of equal depth therewith, and the opposite flanges m are downwardly extended each side of the concavity a in the packing-block 13, these extensions being adapted to slide in the transverse rabbets, thus providing for wear of the packing-blocks on the rod 7 by permitting said blocks to slide together. In the center of the packing-block 13 and down through its upper side a socket-perforation 0 is formed of a proper depth, and from the bottom of said socket a smaller perforation 0 extends, which at its lower end intersects the concavity w. Directly above the socket 0 a threaded perforation is formed in the transverse top member 8 of the holderblock 8, and in said threaded perforation an adjusting-screw 14 is inserted, which may be screwed toward and into said socket a short distance. A nipple is formed on the lower end of the adjustingscrew 14 by reducing the diameter of the screw at said end, and upon the nipple a circular washer is mounted loosely, having a width that permits it to play freely in the socket 0. A strong coiled spring 7) is seated in the socket 0 and at its upper end is pressed upon by the washer in the socket. An oilpassage 0' is formed axially through the adjusting-screw 14 and its nipple extension, so that a liquid lubricant may be fed down through the passage 1', socket 0, and oil-hole 0 directly upon the rod 7 for its lubrication.

1n assembling the details of the improved packing device for service the packing-bloeks l0 and 13 are placed in the holder-Mock 8, said blocks being adjusted by the screws 11, 12, and 14 to closely but yieldingly embrace the rod 7. The stud-bolts 9 are screwed by an appropriate end of each one in a properlylocated threaded perforation in the head 6 of the cylinder 5 until the shoulder at the inner end of each squared portion of the bolt-body impinges upon the cylinder-head, which will cause the four bolts to project from the latter at an equal distance from the central hole a in the head, through which the rod 7 is adapted to reciprocate. The back plate 8, the holder-block 8, and the front plate 8" are successively mounted upon the rod 7 and upon the squared bodies of the bolts 9, so that the back plate may have intimate contact with the true surface of the head 6. Suitable nuts 9 are now screwed upon the front threaded ends of thebolts 9, which project through the front plate 8", and it is of course understood that by tightening the nuts the holder-box, together with the front and back plates therefor, will be clamped steam and liquid tight upon the cylinder-head. Obviously for the convenient application of a liquid lubricant therethrough the adjusting-screw 14 is arranged vertically by the attachment of the holder-block 8 upon the cylinder-head 6, as indicated in Fig. 1, which will permit the lubrica-nt to be poured down through the screw 14 and upper packing-block 13 into contact with the rod 7.

It will be seen that if the motive agent that reeiprocates the rod 7 is steam and heat therefrom expands the red the springs which press upon the packing-blocks 10 and 13 will yield sufliciently to compensate for such a diametrical enlargement of the rod and also of the packing-blocks, so that without excessive friction of the blocks upon the rod the steam will be prevented from leaking through the joint ones for those that are unserviceable this may be readily effected by slackening the adjusting-screws 11, 12, and 14, so as to release the packing-blocks, which may be then slid outward for removal and others inserted in their places, a readjustment of the screws mentioned and the replacement of the frontplate 8" adapting the packing for renewed service."

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A rod packing, comprising a holder'- block having fiat parallel sides, and a rectangular aperture therethrough, packingrblocks spring-pressed toward each other and held to slide in the aperture in the'holder-block, said packing-blocks having their opposed edges concaved for engagement with a rod to be packed, a front plate, aback plate, each plate having an opening through which the rod passes, and means for clamping thefront and back plates upon the holder-block.

2. The combination with a cylinder or the like, a head thereon having'an'opening, and a rod reciprocal in the opening, of a rod-packing, comprising a holder-block havingtwo parallel flat sides, and a rectangular aperture thereth rough, two packing-blocks springpressed toward each other and held to slide inthe rectangular aperture, said blocks having concaved notches on opposed edges which receive and embrace the rod, a frontplate, a back plate, said plates having contact'respectively with the flatsides of the holder-block and each having an opening through which the rod passes, and means for clamping the holder-block and front and back plates together upon the cylinder-head.

3. The combination with a cylinder or the like, a head thereon having an opening, and

, a rodvreciprocal in the opening, of arod-packing comprising a holder-block having opposite flat parallel sides and a rectangular aperture therethrough, two packing-blocks adapted to slide upon each other and each having acurved notch for engagement with the rod to be packed, said blocks loosely fitting in the rectangular aperture, springs in sockets formed in the upper and lower edges of the packingblocks, adjusting-screws in the upper andlower transverse members of-the holder-block and pressing upon the springs, a front plate,

a back plate, said plates having central openings through which the rod passes, and bolts adapted to clamp the plates upon opposite sides of the holder-block and all upon the cylinder-head. v

4. A'rod-packing comprising a holder-block having a transverse rectangular aperture, two

packing-blocks engaging each otherslidably,

and loosely held in the aperture, springs occupying sockets in the packing-blocks, and adjusting-screws in top and lower transverse members of the holder-block, inner ends of the screws pressing uponthe springs for regulating their tension.

5. Arod-packing comprisingaholder block having a rectangular aperture therein, two

' packing-blocks having tongue-and-groove engagement-with each other at side edges thereof, and held to slide in the aperture, coiled springs held in sockets in the packing-blocks,

adjusting-screws pressing with inner ends on the springs, said screws working in top and lower cross members of theholder-bloek, and a central upper adjusting-screw having an oil passage longitudinally therethrough for feeding oil through a passage in the normally upper packing-block.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JACOB JAGOBSON.

- Witnesses:

' WALTER McKAY,

GEO. STROHM. 

